void WScatterData::dropLineVertices(FloatBuffer& dataPoints,
FloatBuffer& verticesOUT)
{
int size = dataPoints.size();
int index;
for (int i=0; i < size/3; i++) {
index = 3*i;
verticesOUT.push_back(dataPoints[index]);
verticesOUT.push_back(dataPoints[index + 1]);
verticesOUT.push_back(dataPoints[index + 2]);
verticesOUT.push_back(dataPoints[index]);
verticesOUT.push_back(dataPoints[index + 1]);
verticesOUT.push_back(0.0f);
}
}
void WScatterData::updateGL()
{
int N = model_->rowCount();
int cnt = countSimpleData();
FloatBuffer simplePtsArray = Utils::createFloatBuffer(3*cnt);
FloatBuffer simplePtsSize = Utils::createFloatBuffer(cnt);
FloatBuffer coloredPtsArray = Utils::createFloatBuffer(3*(N-cnt));
FloatBuffer coloredPtsSize = Utils::createFloatBuffer(N-cnt);
FloatBuffer coloredPtsColor = Utils::createFloatBuffer(4*(N-cnt));
dataFromModel(simplePtsArray, simplePtsSize, coloredPtsArray, coloredPtsSize, coloredPtsColor);
if (simplePtsArray.size() != 0) {
// initialize vertex-buffer
vertexPosBuffer_ = chart_->createBuffer();
chart_->bindBuffer(WGLWidget::ARRAY_BUFFER, vertexPosBuffer_);
chart_->bufferDatafv(WGLWidget::ARRAY_BUFFER,
simplePtsArray,
WGLWidget::STATIC_DRAW,
true);
vertexBufferSize_ = simplePtsArray.size();
// sizes of simple points
vertexSizeBuffer_ = chart_->createBuffer();
chart_->bindBuffer(WGLWidget::ARRAY_BUFFER, vertexSizeBuffer_);
chart_->bufferDatafv(WGLWidget::ARRAY_BUFFER,
simplePtsSize,
WGLWidget::STATIC_DRAW,
true);
}
if (coloredPtsArray.size() != 0) {
// pos of colored points
vertexPosBuffer2_ = chart_->createBuffer();
chart_->bindBuffer(WGLWidget::ARRAY_BUFFER, vertexPosBuffer2_);
chart_->bufferDatafv(WGLWidget::ARRAY_BUFFER,
coloredPtsArray,
WGLWidget::STATIC_DRAW,
true);
vertexBuffer2Size_ = coloredPtsArray.size();
// size of colored points
vertexSizeBuffer2_ = chart_->createBuffer();
chart_->bindBuffer(WGLWidget::ARRAY_BUFFER, vertexSizeBuffer2_);
chart_->bufferDatafv(WGLWidget::ARRAY_BUFFER,
coloredPtsSize,
WGLWidget::STATIC_DRAW,
true);
// color of colored points
vertexColorBuffer2_ = chart_->createBuffer();
chart_->bindBuffer(WGLWidget::ARRAY_BUFFER, vertexColorBuffer2_);
chart_->bufferDatafv(WGLWidget::ARRAY_BUFFER,
coloredPtsColor,
WGLWidget::STATIC_DRAW,
true);
}
if (droplinesEnabled_) {
FloatBuffer dropLineVerts = Utils::createFloatBuffer(2*3*N);
dropLineVertices(simplePtsArray, dropLineVerts);
dropLineVertices(coloredPtsArray, dropLineVerts);
lineVertBuffer_ = chart_->createBuffer();
chart_->bindBuffer(WGLWidget::ARRAY_BUFFER, lineVertBuffer_);
chart_->bufferDatafv(WGLWidget::ARRAY_BUFFER,
dropLineVerts,
WGLWidget::STATIC_DRAW,
true);
lineVertBufferSize_ = dropLineVerts.size();
}
// initialize texture
colormapTexture_ = colorTexture();
chart_->texParameteri(WGLWidget::TEXTURE_2D, WGLWidget::TEXTURE_MAG_FILTER, WGLWidget::NEAREST);
chart_->texParameteri(WGLWidget::TEXTURE_2D, WGLWidget::TEXTURE_MIN_FILTER, WGLWidget::NEAREST);
chart_->texParameteri(WGLWidget::TEXTURE_2D, WGLWidget::TEXTURE_WRAP_S,WGLWidget::CLAMP_TO_EDGE);
chart_->texParameteri(WGLWidget::TEXTURE_2D, WGLWidget::TEXTURE_WRAP_T,WGLWidget::CLAMP_TO_EDGE);
initShaders();
chart_->useProgram(shaderProgram_);
chart_->uniformMatrix4(mvMatrixUniform_, mvMatrix_);
chart_->uniformMatrix4(pMatrixUniform_, chart_->pMatrix());
chart_->useProgram(colShaderProgram_);
chart_->uniformMatrix4(mvMatrixUniform2_, mvMatrix_);
chart_->uniformMatrix4(pMatrixUniform2_, chart_->pMatrix());
chart_->useProgram(linesProgram_);
chart_->uniformMatrix4(mvMatrixUniform3_, mvMatrix_);
chart_->uniformMatrix4(pMatrixUniform3_, chart_->pMatrix());
chart_->useProgram(shaderProgram_);
float text_min, text_max;
if (colormap_ != 0) {
text_min = (float)chart_->toPlotCubeCoords(colormap_->minimum(), ZAxis_3D);
text_max = (float)chart_->toPlotCubeCoords(colormap_->maximum(), ZAxis_3D);
chart_->uniform1f(offsetUniform_, text_min);
chart_->uniform1f(scaleFactorUniform_, 1.0/(text_max - text_min));
} else {
chart_->uniform1f(offsetUniform_, 0.0);
chart_->uniform1f(scaleFactorUniform_, 1.0);
}
}